Machine for forming shapes



Dec. 31, 1940. c. M. YoDER MACHIE FOR FORMINQ SHAPES Filed Aug. 23,19759 IllH v INVENToR CL4/w. M Vaas/P ATTORNEY Patented Dec. 31, 1940UNITED STATES- PATr-:NT oFFicE Y Applicail 5;;)1112291549 poses operatescontinuously to shape stock ierl4 from a coil into tubular form with itsside edges in opposed relation ready for welding, and such machine maybe associated with a cutting olf mechanism wherein the stock is severedinto sections.

In all machines for forming sheet metal in tubular form, of which I haveknowledge, diilrlculty has been experienced in Yovercoming dis- ,20placement of the rolls, or certain thereof, on their shafts, especiallyin the employment of stock of heavy gauge. `It isnecessary that the setof rolls which provide the nal forming steps in such a machine should berigidlysecured in position, so that each roll rotates in a plane atright angles to its shaft and maintains its alinement with the opposedor related roll. This condition applies particularly to that set ofrolls which is utilized for sizing the formed stock. It has been found,where the roll fails to accurately :tit the shaft, that is, its bore islarger from end to end than the shaft or one end of the bore is largerthan its other end, that the roll becomes displaced or out of alinementand hence sets up a wobbling movement or rotates in a plane other thanat right 4angles tothe shaft axis. This abnormal condition has beenfound to occur where the diameter of the bore of the roll or thatportion of the shaft on which the roll is mounted, diil'ers o one or twothousandths of an inch or more, one

from the other. In forming piping great accuracy as to the externaldiameter' thereof is required, so that the sizing rolls `must effectsizing to micrometer dimensions in many instances and ing action isemployed to secure the roll to its shaft.` i

Other objects of the invention will be apparent to thosevslfrilled inthe art to which my invention relates vfrom the following descriptiontaken in connection" with the' accompanying drawing, wherein,

Fig. l is a side elevation of a portion of a machine, embodying myinvention, adapted to shape sheet metal into hollow form. 10

Fig. 2 is a plan view of the line 2-2 of Fig. 1.

Fig. 3 is an elevation looking towards the right. of Fig. l, partly insection on the line 3--3 oi' Figs.

-1 and2.

Fig. 4 is a fragmentary section through a sizing 15 roll and itsmounting.

Fig. 5 is a detail view.

Fig. 6 is a view on the line 6-6 of Fig. 5.

In the drawing,A I indicates as an entirety a machine for operating onsheet metal of 'any desired 20 thickness as it com es from the mill,either hot or cold. rolled, the metal being supplied in any desiredmanner, as from a coil, and fed to roll passes, whereby the metal stockis continuously shaped-,into hollow form, following which the re- 25lated edges rof the form may be welded and/or prior to or after weldingthe form may be cut in sections. As ,such machines are well known, Ihave shown only the last three roll passes la, of such a machine adaptedto form piping A and a. 30 pair of sizing rolls2, 2a, mounted on shaftsI.

For illustrative. purposes my improved mounting is shown applied to onlyone of the sets of farming rolls, namely, the iinal'set, which may beutilized to size the stock. lThe shafts l are 35 mounted in suitableanti-friction bearings in housings l, la, and at oneend the shafts 3 areprovided with gears 5, 5,4 in meshing relation, whereby one shaft isdrivei by the other shaft; for this latter purpose the lower shaft l isex- 40 tended and provided with a worm gear 6 in mesh with a worm 1fixed to a shaft lfwhich is driven by a motor (not shown) The housing lais preferably shaped to form a. casing for the gearing. The shafts, forthe rolls of each pass Ia may be 5 mounted and drivingly 4coniiected tothe shaft l similarly to the mounting and drive meansabove described forthe shafts I, I. Each roll 2, 2a, is mounted on and xed to itssupporting shaft l in the following manner: l inw vdicates a sleevebored to' slidably and snugly llt. the shaft l. The sleeve consists of abody portion 9a. and a plurality of extensions 9b integral with andextending from one end of the body portion in circumferential relationto the shaft l. The

I inner surfaces of the extensions b are sized to fit and engage theshaft, whereas the outer surfaces are curvilinear and tapered towardtheir free ends and cooperate to define a cone-like seat on which thesizing roll is mounted, the roll being conically bored to complementaryt the extensions 9b and so mounted thereon that its outer side projectsbeyond the free ends of the extensions. The shaft 3 is provided on oneend portion, that is, that end 'portion adjacent the extensions Qb, witha fixed collar -or abutmentla (preferably formed integrally therewith)and one or more spacers I0 (only one being shown) are interposed betweenthe collar 3a and the adjacent side of the sizing roll to form anabutment means therefor, and to aline the rolls one with the other. Theopposite end portion of the shaft 3 is provided with screw threads Ib totake a nut II, which is arranged to be tightened against the adjacentend of the sleeve 9. such operation serving to force the extensions 9baxially of the shaft and sizing roll, which being held stationary by thecollar 3a, compresses the extensions 97h inwardly into rigid relation tothe shaft, so that the extensions form a circumferential wedge betweenthe shaft and roll. As the metal of the sleeve 9 is slightly resilientand the extensions 9b are spaced from each other, they may be compressedinwardly to effect a wedging action as above set forth, so that when thenut Il is tightened, the

sizing roll is -xedly secured from end to end to the shaft and danger ofits wobbling or getting out of alinement with the axis of the shaft iseliminated.

The nut Il may be iixed in tightened position by a jam-nut I2.

If desired the sleeve 9 may be keyed to the shaft 3 and when necessaryone or more spacers may be provided between the nut Il and the adjacentend of the sleeve.

,To those skilled in the art to which my inventionrelates, many changesin construction and widely differing embodiments and applications of theinvention will suggest themselves withoutdeparting from the spirit andscope of my invention. The disclosures and the description herein arepurely illustrative and are not intended to be in any sense limiting.

What I claim is:

l. In a machine o`f the class described, the combination with a pair ofhousings, of upper and lower shafts mounted therein, a roll mounted onone of said shafts, a sleeve slidably tting the other shaft and providedatone end with spaced extensions the outer surfaces of which define acone-like seat, abutment means iixedly secured to said shaft, a rollalined with said rst mentioned roll and having a conical bore fittingsaid seat, and engaging said abutment means, and means on said shaftarranged to engage the other end of the sleeve and force it endwise toeffect a wedging action of said extensions between said shaft and saidroll, whereby the latter is rigidly connected to said shaft.

2. In a machine of the class described, the combination with a pair ofhousings, of upper and lower shafts mounted therein, a roll mounted onone of ysaid shafts, the other shaftbeing provided adjacent one endportion with a fixed abutment and adjacent its other end portion withscrew threads, a nut engaging said screw threads, and a sleeve and aroll on said last mentioned shaft, said roll being engaged with saidabutment and said sleeve being engaged with said nut. said roll having aconical bore and said sleeve having spaced extensions tting into saidbore, whereby -fsaid n'ut when tightened forces said extensions endwiseof the roll to rigidly secure the latter to said shaft.

3. In a machine of the class described, the combination with a pair ofhousings, of upper and lower shafts mounted therein, a roll mounted onone of said shafts, the other shaft being provided adJacent one endportion with a fixed abutment and adjacent'its other end portion withscrew threads, a nut engaging said screw threads, and a pair of elementsinterposed between and respectively engaging said abutment and said nut,one of'said elements consisting of a sleeve engaging said nut at one endand slidably fitting said shaft, the opposite end portion of said sleevecomprising a plurality of spaced extensions and the other elementconsisting of a roll engaging said abutment and having a conical boreinto which said extensions t, whereby said nut when tightened forcessaid extensions endwise of the roll to rigidly secure the latter to saidshaft.

4. In a machine of the class described, the combination with a pair ofhousings, of vupper and lower shafts mounted therein, arroll mounted onone of said shafts, the other shaft being provided adjacent `one endportion with a fixed abutment and adjacent its other end portion withscrew threads, a nut engaging said screw threads, and

.a pair of elements interposed between and respectively engaging saidabutment and said nut, one of said elements consisting of a sleeve oneend of which engages said nut, the opposite end portion of said sleevecomprising a plurality of spaced extensions having outer surfacestapered toward their free" ends, said sleeve slidably fitting saidshaft, and the other element consisting of a roll engaging said abutmentand having a conical bore into which said extensions fit, said nut whentightened being arranged to force said extensions endwise of the roll torigidly secure the latter to said shaft.

5. In a machine of the classA described, the combination with a support,of a shaft mounted at its opposite ends in said support, one-end portionof said shaft being provided with a xed abutment and its other endportion being vprovided with screw threads, a roll having a conical boreand surrounding said shaftin engagement with said abutment, a sleeveslidably fitting said shaft, one end portion of said sleeve having an

